Gas range



May 10, 1938. 1A. STOCKSTROM 2,117,227

GAS RANgE Fi ed Nov. 20, 1951 4 Sheets-Sheet l ,t' IZ r I ail 0:30 i 1 'HIHIH g 14* 3nventor May 19, 1938.

A. STOCKSTROM GAS RANGE Filed Nov. 20, 1951 4 Sheets-Sheet 2 nnentor May 10, 1938. A. STOCKSTRO M 2,117,227

GAS RANGE Filed Nov. 20, 1931 4 Sheets-Sheet 3 nnentor i W 5 v62? attorney;

May 10, 1938 STOCKSTROM GAS RANGE Filed Nov. 20, 1931 4 Sheets-Sheet 4 Bu a xv} I attorneys Patented May 1 0, 1938 g Q I UNITED STATES PATENT OFFICE GAS RANGE Application November 20, 1931, Serial No. 576,399 12 Claims; (Cl. 236-15) This invention relates to improvements in gas nector for use between the regulator and the heat ranges and is more particularly directed to a control setting mechanism. new and improved type of oven heat regulator Fig. 9 is a still further modified form of the for domestic cooking equipment. flexible connector for use between the regulator The primary object of the invention is the and the heat control-setting mechanism.

provision of a new and improvedtype of oven Describing the invention in detail with referheat regulator for use in conjunction with gas ence to the accompanying drawings wherein simstoves 01' the concealed manifold type whereby ilar parts are designated by like reference nuthe oven heat regulator and its auxiliary operatmerals throughout the description, having par- 10 ing equipment is concealed from view. ticular reference toFigure 1 of the drawings it 10 A further object of the invention is the proviwill be seen there is provided a gas range supslon of a new and improved type of oven heat ported upon the usual legs I which comprises a regulator of the type mentioned wherein there is pair of superimposed ovens 2 and 3 one of which provided novel means of connection between the is a baking oven and the other a broiling oven.

oven heat regulator setting wheel and the regu- Adjacent these ovens is positioned the open cook- 16 lator whereby the regulator and its auxiliary oping top portion 4 of the range having of course erating equipment, which is unsightly, can be beneath it a plurality of gas burners 5 positioned concealed within the gas range. within the cooking top burner housing 6.' These A still further object of the invention is the burners are supplied with fuel by the main gas 20 provision of a new and improved type of oven conduit 1 and the delivery of fuel from the con- 20 heat regulator for accomplishing the purpose deduit to the burners is under the control of suitscribed which is suitable and applicable to ranges able valves 8 which are provided with elongated of different sizes and configurations by a simple operating handles 9 which extend outwardly and cheap change or alteration in the connecthrough the burner housing front panel to which '25 tion between the regulator proper and the 'regu conceals the burners, their valves and the gas V lator setting or adjusting mechanism. supply conduit.

Other and further specific features of novelty For the purpose of beautifying and lending enof the present invention together with additional chantment to the .appearance of the stove this advantages of the invention will appear from the burner housing front panel is in turn provided following description taken in conjunction with with a control panel portion II and all of the 30 the accompanying drawings. elongated valve handles 9 pass through this 0011-. In the drawings: trol panel H and are provided on the panel with Figure 1 is a view in front elevation of a gas valve operating handles l2. range of the concealed manifold type having ap- Beneath the open cooking top burner housing plied thereto an oven heat regulator of the presthe range is provided with a sliding drawer I3 35 I cut improved type. for the reception and storage of utensils while im- Fig. 21s a fragmentary horizontal sectional mediately behind the cooking top the range is view of the range illustrated in Figure 1 showing provided with a splash back-or plate i4 above the manner of application of the improved heat which at the rear of the cooking top is positioned 40 regulator thereto. a shelf l5.

Fig. 3 is a fragmentary vertical sectional view Reference now being made particularly to Figthrough the range illustrated in Figure 1 of the ure 2 of the drawings we see that the oven is drawings. provided with an outer wall It and an inner 1121- Fig. 4 is a horizontal sectional view taken on ns l1 providing etw n th m a pace I w ch 45 the line 4--4 of Figure 3 looking in the direction in ordinary practice is filled with insulating maindlcated by arrow. terial so that 'the 'oven may better retain its Fig. 5 is a vertical sectional view taken on the heat. The oven bottom is represented at l9 and line 5-5 of Figure 1. beneath this. is positioned the oven burner 20 Fig. 6 isjan enlarged fragmentary front view having, as is usual/a mixing tube 3| through 50 of a portion of the control panel of the range. which the gas or fuel is delivered to the burn Fig. 7 is a perspective view of a modified form There is also provided an oven burner pilot light of connector used between the regulator and the or burner 22.

heat control setting mechanism. In the drawin s the open cooking top portion Fig. 8 is a modified form of the flexible con- 01 the range is illustrated as being provided with The bifurcated end at the other side of the enlarged end of the valve formed with it a gas inlet 26 and an elongated.

gas outlet conduit 21 which in its lower end is provided with an outlet orifice or nozzle 28 which extends into the mixing tube 2| of the oven burner 26. The upper end 29 of the portion 24 of the housing is provided with an opening closed by a cap nut 30 by means of which access can be had to the interior of the housing.

A lever 3| fulcrumed intermediate its length at 32 extends throughout the length of the housing portion 24 and into the housing portion 25. The upper end of the lever is designated as 33 and the lower end 34 of the lever is bifurcated as clearly appears in Figure 4 of the drawings. The upper end 33 of the lever is adapted to be engaged by the end '35 of aporcelain rod B which is mounted within a copper tube C. The copper tube C in conjunction with the porcelain rod act as a thermostatic element and are supported by the collar 36 at the upper end of the housing portion 24 and extend across the oven top as clearly illustrated.

The lower bifurcated end 34 of the lever straddles the tubular hollow stem 31 of a valve 38 which valve is adapted for reciprocation upon a rod 33 against the tension of a coil spring 43 which bears against the enlarged end 4| of the valve stem 31 at one side of the enlarged end. 34 of the lever is positioned stem. The valve 38 is provided with a movable and adjustable seat 42 which is of a hollow tubular form and is exteriorly threaded as at 43 in the housing portion 25 which housing at this particular point is tubular in form to provide a supplemental housing 45 having an upper wall 46. The outer end of this tubular portion 45 is closed by a nut 41. This supplemental'housing 45 has communication with the housing 25 and the gas inlet 26 through'the valve 38 and is constantly in communication with the gas outlet 21, as is clearly apparent in Figure 3 of the drawings.

When the valve 33 is seated and normal communication between the chamber 45 with the gas inlet is closed a small and restricted communication between the gas inlet and the chamber or housing 45' is maintained by a hollow bolt 48 which has an inlet 43 communicating with the gas inlet 26 while its lower open end is in communication with the interior of the chamber will remain lighted even though the thermostatic control operates to close the valve 38 and thus shut off the main gas supply to the oven burner. The oven-burner gas valve is provided with an elongated operating rod 54 which is provided at the. control panel ll of the range with anoperating handle 55.

75 It will of coursebe apparent that the thermostatic elements 13 and C in conjunction with the coil spring 43 operate the lever 3| to open and close the valve 38. When the thermostatic eleis contracted it engages the upper end 33 of the lever 3| and rocks the lever upon its fulcrum to move the lower end of the lever and open the valve 36. When the thermostatic element is ex-' stat can be set to shut oif the supply of gas to the oven burner when the oven temperature has reached a predetermined degree of heat. In the present construction this adjustment and control of the thermostat is had through the adjustable valve seat 42. The heat at which the thermostat is to operate to close the valve 38 is determined by' the position of the valve seat 42. To this end means are provided for revolving the valve seat 42 and moving it towards and away from the valve 38. The setting and control means for the thermostat is through a remote control in the form of a rotatable knob 56 carried on the control panel II at the front of the range. This knob rotates a stub shaft 53 which extends into the burner chamber of the open cooking top and at its end carries a bevel gear 14. A bar 15 which serves as a support for the opencooking top burners also serves as a support for a bracket 16 which supports and steadies the shaft 51 and additionally supports a stub shaft 11 which extends at right angles to the shaft 51 and is provided with a bevel gear 18 which meshes the bevel gear 14. One end of a flexible cable 59 has connection as at 53 with the stub shaft 11 while its other end is attached as at 66 to a stub shaft 6| having areduced end portion 62 which extends into the supplemental housing or chamber 45.

' The valve seat 42- is slotted as at 63 to receive the cross bar 64 which is riveted or otherwise suitably secured to the reduced end 62 of the stub shaft 6| as indicated at 65. By this arrangement it will be evident that the rotation of the knob 56 will rotate the valve seat 42 and permit the movement of the valve seat towards and away from the valve;

To prevent the escapage of gas from the chamber the stub shaft 6| is surrounded with a packing 66 whichis compressed by a packing nut 61 which likewise 'surrounds'the stub shaft and threadedly engages the nut 41 at 63.

As it is essential for the operator of the range to determine the setting of the thermostat an indicator is provided in the form of a circular dial 69 carried by and rotatable with the shaft 51 as clearly indicated in- Figure 5 of the drawings. In line with concealing every possible mechanical part of the range this dial'is positionedbehind the control panel H and the graduations'fli, see Figure 6, which indicate the thermostatic setting are viewed through the opening 1| provided in the control panel. To lend appearance to the range the edges 12 of this opening are beveled inwardly and the upper edge is shaped to provide a pointer 13 to permit accurate setting of the dial.

From theforegoing it will be 'seen that a thermostatic control mechanism for the oven burner of the range is provided in which every part thereof with the exception of the setting knob and a slight portion of the setting dial is concealed from view, thus lending to the manufacture of a range of a most pleasing appearvidual model of gas range in that the different.

models vary as to size and configuration. That this is so will be readily understood when it is borne in mind that to provide a stove of balanced appearance it is necessary that thesetting device for the various oven temperatures be centrally located on the control panel of the rarge. The flexible connection and operating mechanism herein provided permits this positioning with a standard and single form of thermostat.

In the preferred form of the invention as illustrated in Figures 2 and 3 of the drawings the flexible connector 59 is of the wrapped wire type such as is used and found in speedometer shafts, but other flexible connectorscan be used without departing from the spirit of the invention and other types of flexible connectors are illustrated in Figures 7, 8'and 9 of the drawings.

In Figure 7 of the drawings a 'flexible connector of the universal joint type is illustrated at D and is of an inexpensive and simple construction.

Figure 8 illustrates a still further type of flexible connector and represents a woven or braided fine wire type E which will work satisfactorily with the device. Y

Figure 9 is still another representation of an additional type of flexible connector and illustrates a wrapped flexible metal tubing F which has also been found to work satisfactorily with the device.

Having thus described my invention what I claim and desire to secure by Letters Patent is:

1. In a cooking range, an oven and a cooking top portion adjacent thereto having beneath it a closed housing, a thermostat and a control means therefor for controlling the oven temperature, said thermostat and its control means being completely concealed within the oven and the housing beneath the cooking top, an operating means for said thermostat control positioned externally of the range, and a rotary flexible shaft connecting said thermostat control and its operating means, for the.purpose described.

2. In a cooking range, an oven and a cooking top portion adjacent thereto having beneath it a closed housing, a gas burner in the oven,'.a' gassupply for said burner, a thermostat for controlling the oven heat temperature by'con trolling the supply of gas to said burner, a control element for controlling and determining the operation of said thermostat, said thermostat and its control element completely concealed within the oven and the housing beneath the cooking top, a setting means for said thermostat control positioned remote to the control and fuel burner therein, means for obtaining and maintaining a given temperature in said chamber comprising a unit composed of a thermostat and a controlling means therefor for. controlling the supply of fuel to said burner, and a setting means for said controlling means and having a rotary flexible shaft connection therewith, whereby the positions of the temperature controlling unit andthe setting means can be altered without altering the construction of either..

4. A thermostatic gas oven regulator, comprising a valve, a thermostat operatively connected thereto, a rotatably adjustable member remote from the-valve, and means including ;a

rotary flexible shaft so connecting the member and valve that the latter can be adjusted by v rotating the former. k

5. A thermostatic gas oven regulator, comprising a valve, a thermostat operatively connected thereto, a manually rotatable member remote from the valve, the rotary axis of the meinber being relatively angular tothe longitudinal axis of the valve, and means including a rotary flexible shaft so connecting the member and valve that the latter can be adjusted by rotating the former.

6. A thermostatic gas oven regulator, comprising a valve, a thermostat operatively connected thereto at one side of the valve, a member connected to the valve at its opposite side, a. manually rotatable member remote from the valve, and means including a rotary flexible shaft so connecting the two members that rotation of the second-named member manually adjusts the valve. I

7. In combination with a stove having an oven and a gas burner therefor, a thermostatic regulator' comprising a valve for controlling the gas to the burner. a thermostat operatively connected to the valve and extending into the oven, a manually rotatable member at the front of the stove and remote from the valve, and means including a rotary flexible shaft so connecting the member and valve that the latter can wall thereof, a manually adjustable member adjacent to said valves at the front of the stove and remote from said oven burner valve. andv rotary flexible means so connecting the member and valve that the latter caii be adjusted by the former.

9.- In combination, a plurality of open burn! ers, a gas manifold extending along said burners and adapted for supplying gas thereto, an oven, a

thermally operated .device disposed within the oven, a controlling device disposed within the oven and in proximity to said thermally operated device, a selecting device adjacent the manifold and flexible rotatable means operatively .connecting said selecting device and said controlling device. l

1 10. The combination with an oven the temperature of which is to be controlled, of a thermostat; having a non-rotating expansible'tube extending across said oven from one side toward the other through a zone of average temperature, a burner zone adjacent said oven, a valve casing situated in said burner zone,- a temperature adjusting screw threaded into said casing, a rotary flexible shaft secured to said screw for adjusting the same, and means outside of the burner compartment for rotating said shaft.

11. The combination with a range including a cooking top having a burner compartment therebelow, of an oven at one side of said cooking top, and an adjustable thermostat including heat responsive mechanism, a valve casing and control mechanism, said heat responsive mechanism being located within said oven, said casing being located within said burner compartment and said control mechanism being located exteriorly otsaid burner compartment and laterally of the even, there being a rotary flexible operating shaft between said control mechanism and said heat responsive mechanism operatively connected thereto in substantial tangential relationship. 12. The combination with a range having an oven with a cooking top and burner compartthermostat, and remote control means adjacent.

said cooking top for operating said shaft.

ARTHUR STOCKSTROM. 

